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Massive slowdown after upgrading to routeros 6.48.2

Posted: Fri Apr 23, 2021 3:03 am
by slimprize
Hi all,

When I upgraded to routeros 6.48.2, I began experiencing massive slowdowns. I initially thought the problem was only with the wireless connection of the router but the entire router was impacted. I have a 1GBPS connection from my ISP and was getting only 90MBPS. This was with a desktop connected directly to the LAN interface of the router.

I rolled back via the downgrade command and the router is back to running normally.
However, the version still shows 6.48.2 so I do not know what got downgraded but the router is back to normal.
routeros 6.48.2
board-name: hAP ac
model: RouterBOARD 962UiGS-5HacT2HnT

I do not know what is happening and am happy to submit diagnostic information.
Pranav

Re: Massive slowdown after upgrading to routeros 6.48.2

Posted: Fri Apr 23, 2021 5:28 am
by Cablenut9
If you're getting limited to 90 Mbps, check the "link rate" of your WAN connection. If it's 100 Mbps, then there's your problem.

Re: Massive slowdown after upgrading to routeros 6.48.2

Posted: Sat Apr 24, 2021 6:01 am
by slimprize
Hi,
I went to /interface ethernet
I have a pppoe interface and the ISP's DSL modem router which is running in bridge mode is connected to ether1.
I ran the monitor and get the following output.

[pranav1@ConShield] /interface ethernet> monitor ether1
name: ether1
status: link-ok
auto-negotiation: done
rate: 1Gbps
full-duplex: yes
tx-flow-control: no
rx-flow-control: no
advertising: 10M-half,10M-full,100M-half,100M-full,1000M-half,
1000M-full
link-partner-advertising: 10M-half,10M-full,100M-half,100M-full,1000M-full

If I am reading the above correctly, the port is running at 1GBPS.

Re: Massive slowdown after upgrading to routeros 6.48.2

Posted: Sat Apr 24, 2021 11:26 am
by Kindis
I always restart my equipment twice after a upgrade. First ROS then firmware. I think that in many cases a second restart solves many issues. So perhaps the reboot solved the issue?

Re: Massive slowdown after upgrading to routeros 6.48.2

Posted: Sat Apr 24, 2021 11:53 am
by slimprize
Hi,

The second reboot may well have solved the wireless issue.

The slowdown however has an interesting solution. The problem was with my desktop from where I was conducting the speed test. Its LAN interface was flaky. The router's reboot was fixing the problem because the desktop would reconnect to the lan at a full 1GBPS.
The interface was unable to negotiate a higher load so the connection would downgrade to 100MBPS.

I have changed the LAN cable and things appear to be stable.

Pranav

Re: Massive slowdown after upgrading to routeros 6.48.2

Posted: Fri Apr 30, 2021 3:17 am
by slimprize
Hi all,
I have upgraded the router.
board-name: hAP ac^2
model: RBD52G-5HacD2HnD
serial-number: C6140DDD9D8F
firmware-type: ipq4000L
factory-firmware: 6.44
current-firmware: 6.48.2
upgrade-firmware: 6.48.2

I am attaching the configuration of the new router. The speed issues persist.

Fast track is active.
[admin@ConShield] /ip settings> print
ip-forward: yes
send-redirects: yes
accept-source-route: no
accept-redirects: no
secure-redirects: yes
rp-filter: no
tcp-syncookies: no
max-neighbor-entries: 8192
arp-timeout: 30s
icmp-rate-limit: 10
icmp-rate-mask: 0x1818
route-cache: yes
allow-fast-path: yes
ipv4-fast-path-active: no
ipv4-fast-path-packets: 0
ipv4-fast-path-bytes: 0
ipv4-fasttrack-active: yes
ipv4-fasttrack-packets: 45698507
ipv4-fasttrack-bytes: 47714627084

I am getting about 830MBPS down and approximately 800 MBPS up though these readings vary.
Pranav